If the Option field value in the 0SPFv3 Hello message issued by the router's GIgabit Ethermet0/0 interface is 0x000013, the following description is correct

The Gigabit/thernetO/0/0 interface of Router A adds IPv6 routing to compute

Router A supports AS-An External-LSA flood

Router A is an OSPFv3 device with forwarding capability

The Gigabit/thernetO/0/0 interface of Router A adds IPv6 routing to compute

Router A's Gigabit/thernetO/0/0 interface belongs to the NSSA zone

Router A supports AS-An External-LSA flood

Router A is an OSPFv3 device with forwarding capability

Regarding the BGP ring protection mechanism, is the following description correct?

The AS_ PATH attribute is used between autonomous systems to prevent ring cats

Routes learned from IBGP are not advertised to IBGP neighbors and are used to prevent routing loops inside the AS.

You can use the AS_ CONFED_SET attribute to prevent loops within a consortium.

The AS_ PATH attribute is used between autonomous systems to prevent ring cats

The Cluster List property is used for loop guard within the reflector cluster, and the router rejects the route when it finds that the Cluster List of the route entry contains its own Cluster ID.

Routes learned from IBGP are not advertised to IBGP neighbors and are used to prevent routing loops inside the AS.

You can use the AS_ CONFED_SET attribute to prevent loops within a consortium.

Regarding Route Policy, is the following description correct?

The table entries pernit::0 Less an equal 128 indicate that all IPV6 routes are allowed through

If more than one node is defined in Route one policy, there should be at least one node in each node that matches permit

Route one policy filters only the default route

Advanced ACLs can be applied in route-policy to filter routes

The table entries pernit::0 Less an equal 128 indicate that all IPV6 routes are allowed through

If more than one node is defined in Route one policy, there should be at least one node in each node that matches permit

Route one policy filters only the default route

The following is the correct description of the aggregation of BGP? (Single Choice Questions).

You can manually aggregate the routes in the BGP local routing table with a profile

After you configure aggregate ipv4-address mask , only aggregate routes are published, not detail routes.

For IPv6 routing, BGP supports manual coalescing and automatic aggregation

By default, BGP enables automatic aggregation

You can manually aggregate the routes in the BGP local routing table with a profile

The following about BGP routing, what is the wrong description?

Non-aggregate routes take precedence over aggregate routes.

In the case of PrefVal, Local_Preference equality, if the BGP preference of the locally generated route, IBGP route, EBGP route is equal, the valid reference of this generation is preceded by priority.

See the following entry in the BGP routing table: ï *172 16 1. 11/32 0 00010 0? Indicates that the route is available non-optimal.

For next_hop unreachable routes are invalid cat by and do not participate in the preference.Flogging case

The following description of Filter-Policy is correct?( Radio neck).

With Filter-Policy, on ASBR in OSPF, you can filter the generation of type5 LSA and type7LSA.

Prefix lists can be used to filter both routes and packets.

Filter-policy filters the link state information received or published, and can modify the properties of route entries.

When using a prefix list to filter routes, the table entry ip-prefix 1 deny 0000 0 less-equal 32 matches only the default route.

When deploying the ISIS protocol in an IPv6 environment , the following statement is correct (single choice).

In the same broadcast network. If each router supports both IPv4 and IPv6 The DIS for IPv4 and IPv6 must be the same device

By default, the DIS priority for broadcast network interfaces at Level-1 and Level-2 is 1

In broadcast networks, IPv4 and The DIS priority for IPv6 can be set separately

In the same broadcast network. If each router supports both IPv4 and IPv6 The DIS for IPv4 and IPv6 must be the same device

IS-IS is configured under the finger port is ISIS silent, this interface will not send ISIS packets, but will receive ISIS packets

In the city, that is, mpLS BGPVPN network, when the packet enters the public network forwarding, it will be encapsulated with two layers of MPLS tags, the following description of the two layers of tags, the error is ?

By default, the router assigns the same tag value to all VPNv4 routes destined for the peer

Private network tags are carried and distributed by MP-BGP when routing, and public network tags are distributed by the LDP protocol.

MPLS BGPVPN uses two layers of tags: public labels (also known as outer labels) and private network labels (also known as inner labels).

By default, the router assigns the same tag value to all VPNv4 routes destined for the peer

The egress PE uses the inner tag when determining which egress CE the message should be sent to.

The following description of the LDPLSP establishment process is correct?

When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original nonoptimal next-hop neighbor. Liberal needs more memory and tag space.

The process of establishing a D. LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.

By default, LSRs are for the same FEC, and the received tag mappings can only come from the optimal next hop, not from the non-optimal next hop.

When a network topology change causes the next hop neighbor to change, the free label keep method is used. LSR can quickly rebuild the LSP by directly using the labels sent by the original nonoptimal next-hop neighbor. Liberal needs more memory and tag space.

In the DoD mode of label publishing, for a specific FEC, the LSR does not need to obtain a label request message from upstream to distribute the label.

The process of establishing a D. LSP is actually to bind the FEC to the tag and advertise this binding to the LSP upstream LSR process.

What improvements have been made to the IGMPv2 protocol compared to IGMPv1? ( Multiple Choice)

Added maximum response time field

Added specific group query message

Added maximum response time field

Added specific group query message

Added a specific source group query packet

Which of the following attacks are DoS (Denial of servioe) attacks?( Multiple choice question)

Source P address spoofing attack

For Layer 2 VPN technology, the following statement is correct?( Multiple choice questions).

The VPLS configuration is complex and the Layer 2 network transmits BUM packets.

BGP EVPN supports features such as tenant isolation, Multi-homing , and broadcast suppression.

VPLS is a widely used technology in the live network, which can provide transparent transmission of three-layer messages and achieve multi-point access.

The VPLS configuration is complex and the Layer 2 network transmits BUM packets.

BGP EVPN supports features such as tenant isolation, Multi-homing , and broadcast suppression.

BGP EVPN addresses issues such as MAC address drift and multi-tenancy that VPLS cannot support.

How do.8021w and 8021D handle BPDUs?( Single choice questions).

The 8021D bridge only forwards BPDU packets received from the root bridge

8021D bridges do not forward BPDU packets

The 8021w bridge only forwards BPDU packets received from the root bridge

8021w Bridge does not forward BPDU packets

Which of the following scenarios send free ARP messages?( Multiple choice questions).

After the VRRP protocol master and standby role election is completed

The DHCP client receives an acknowledgment message from the server after it sends it

When a new host configured with an IP address is connected to the network

After the VRRP protocol master and standby role election is completed

The DHCP client receives an acknowledgment message from the server after it sends it

When a new host configured with an IP address is connected to the network

When a host connected to the switch issues a Ping message.

When you troubleshoot a local area network with Huawei equipment deployed, you find that there are a large number of unicast frames with unknown source AC addresses in the local area network .A large number of unknown source MAC addresses single-plug frames can cause the switch the biggest danger is ?

Consume the MAC address table entry available in the system

Memory that occupies the cache ton

Increases the power consumption of the power supply

Consume the available bandwidth

Consume the MAC address table entry available in the system

What are the reasons why the BGP connection is down after it is successfully established ? ( Single choice questions) Single choice

Open message negotiation failed.

The wrong BGP packet was received.

The mandatory attribute in the route update packet is missing.

Open message negotiation failed.

After the BGP connection is established, the keepalive message is not received within the negotiated holdtime time.

There are two Communily filters: ip comimuniy-lite lpemit 101201 ip community fiter 2permit101 ip commmuriyfilter 2pemit21 Regarding the above ommuniyfiter, the correct description is ?( Multiple choice questions).

As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter2

The BGP route matches community-filter 1 only if the community attribute values carried in the BGP route contain 100:1 and 200:1

As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches the community-filterl

As long as the group attribute value carried in the BGP route contains 100:1 or 200:1, or both, the BGP route matches community-filter2

The BGP route matches community-filter 1 only if the community attribute values carried in the BGP route contain 100:1 and 200:1

A BGP route matches community-filter2 only if the group attribute values carried in the BGP route include 100:1 and 200:1

Regarding Policy Routing, the following description error is ?( Single choice questions).

If the message matches the permit table entry in the interface policy route , the message must be forwarded according to the next hop specified by the interface policy route

When configuring local policy routing, if two next hop and two outbound interfaces are set in the policy at the same time, packet forwarding only distributes the load between the two outbound interfaces.

Interface policy routing is only supported for application in the inbound direction of an interface.

Interface policy routing only takes effect for forwarded packets, but has no effect on packets sent locally.

If the message matches the permit table entry in the interface policy route , the message must be forwarded according to the next hop specified by the interface policy route

What type of prefix does a router running BGP advertise to its IBGP neighbor (assuming the router is not configured as a route reflector)? (radio).

Prefixes are learned through EBGP neighbors, or prefixes are learned locally through network or routing introduction

Prefixes are learned through other IBGP neighbors, or prefixes are learned from EBGP neighbors, or prefixes are learned through routing introduction

A prefix that exists in the routing table

Prefixes are learned through other BGP neighbors, or prefixes are learned locally through network or routing introduction

Prefixes are learned through EBGP neighbors, or prefixes are learned locally through network or routing introduction

The prefix is learned through an EBGP neighbor, or the prefix is learned from an from RR

The router is running both OSPFv3 and ISIS, and the OSPFv3 route needs to be introduced to ISIS, which of the following ingestion configurations is correct:( Multiple choice questions).

Huawel ias 1 ltuawei-i- isHeveleve!. l Huave-s-1 networkenity 47001.0000020 Hawe -sis-1 ipv6enabletopolog standard Htuawer is-] pob impot.

[Huawei] sis 1 [Huawel-isis-1] networkentity47001.000000200 Huawe-ss 1 ipb6enable topologist standard Huawei is l p6 importroue esgp.31lese! [Huaweisis-1] quit [Huawei

Huawel ias 1 ltuawei-i- isHeveleve!. l Huave-s-1 networkenity 47001.0000020 Hawe -sis-1 ipv6enabletopolog standard Htuawer is-] pob impot.

(Huawei isis l Huawei-si-1 s-levelve!-l Huavei- ti.-1] networkentiy 4 .001.00001. Huawei sis pob enable topogy s andard Hhuawelitis ]l p6 importroute ospfv3 1 [Hu

[Huawei] sis 1 [Huawel-isis-1] networkentity47001.000000200 Huawe-ss 1 ipb6enable topologist standard Huawei is l p6 importroue esgp.31lese! [Huaweisis-1] quit [Huawei

HuaweJ IsIS [Huaweij isis 1 Huavei-isis-1]networkentity470001.000000020Huawei-sis- 1limpotroueosph31 ltuowe.is- ut tuawl sph 1 fhuwf spol Jronea d2222 [Huawei) isis 1 Huawe-sis-1] is level level-1 [Huavei-sis-1 etworkentity 47001.0000020Huawel-d.-1[impotroteosph-1 le e. [tuawelts a ut ltunweospfv3 1 [Huawei

The following description of the characteristics of multi-instance CE is ?

Since the MCE device is already bound to the VPN, there is no need to bind the VPN on the PE connected to the MCE device

The MCE device can determine the source of the routing information according to the interface that receives the routing information, and maintain it in the route forwarding table of the corresponding VP.

MCE is implemented by creating their own routing forwarding tables for different VPNs on the MCE device and binding to the corresponding interface o

Configuring MCE enables a CE to connect to multiple VPNs at the same time, which can not only completely isolate the service between different VPN users, but also reduce the input cost of network equipment.

Users within a typical VPN can only communicate with each other, not with Internet users, and with Internet. But VPN individual sites may have access to internet's needs. The correct description of the implementation of VPN interconnection with internet is ?( Multiple choice questions).

is implemented on the user side, and the CE is directly connected to the Internet. Each user site can be connected to the Internet separately, that is, the CE of each site is configured with a default route to the Internet.

Implementing a complex implementation on PE and having security implications, PE devices may be subject to Dos attacks on the Internet.

Implemented on PE, the PE device issues a default route to the CE to the Internet and adds a default route to the VPN instance routing table pointing to the Internet Gateway o

Implemented on the user side, the implementation method is simple, and the public network and private network routes are isolated, safe and reliable.

is implemented on the user side, and the CE is directly connected to the Internet. Each user site can be connected to the Internet separately, that is, the CE of each site is configured with a default route to the Internet.

Implementing a complex implementation on PE and having security implications, PE devices may be subject to Dos attacks on the Internet.

Implemented on PE, the PE device issues a default route to the CE to the Internet and adds a default route to the VPN instance routing table pointing to the Internet Gateway o

Implemented on the user side, the implementation method is simple, and the public network and private network routes are isolated, safe and reliable.

The following message about the Register in PIM-SM describes the correct ?( Multiple choice questions).

The Register message enables the RP to learn the multicast source information

Register messages are sent to RPv via unicast instead of multicast

The Register message is sent by the source DR

The Register message enables the RP to learn the multicast source information

The Register message is sent by the receiver router

Register messages are sent to RPv via unicast instead of multicast

The Register message is sent by the source DR

Host HW1 in the HW device network Wants to join a video conference, so what does that host do?

The IGMPv2 membership report is sent over multicast in the local network, and the multicast address carried in the IGMPv2 membership report is the multicast address that you want to join

Sends an IGMPv2 membership report to the default router unicast of the local network

Sends a unicast IGMPv2 membership report to the RP

The IGMPv2 membership report is sent over multicast in the local network, and the multicast address carried in the IGMPv2 membership report is the multicast address that you want to join

The IGMPV2 membership report is sent over multicast in the local network, and the destination multicast address of the IGMPv2 membership report is "All PIM Routers" 224002 Multicast address

A bookstore provides a wired network for customers to learn online. However, one day, it was found that some users could not access the network, and after inspection, it was found that the IP resources of the DHCP address pool had been exhausted. Which of the following is the best way to solve the problem of the moment? ( Single choice questions).

Limits the maximum number of DHCP Snooping binding table entries that the interface allows to learn

Configure the static ARP binding table

Limits the maximum number of DHCP Snooping binding table entries that the interface allows to learn

You want only his telnet stream to be able to access the server (address 1011.100). Then, you add the following ACL to the routing ring: nule5pemit cp source ny destination 1011.100000destinationporteq 23 rule 1l0 deny ip source any destination any Then you apply that ACL to the ingress direction of the router's seial interface. What type of message is allowed to pass through the router?( Multiple choice questions).

Non-first-sharded messages that use port 23 to access the server's message

Non-first-of-its-kind packets that use port 21 to access the server

Packet answer for the first sharded or non-sharded, using port 23 to access the server

A non-sharded, port 21-accessing packet

Non-first-sharded messages that use port 23 to access the server's message

Non-first-of-sharded messages to access other hosts

Non-first-of-its-kind packets that use port 21 to access the server

Packet answer for the first sharded or non-sharded, using port 23 to access the server

Dual-bucket, two-speed is used in traffic governance, where the number of tokens in a C bucket is TC and the number of tokens in a P bucket is TP. When a message of length B enters, which of the following sentences is correctly described? (Multiple choice questions).

If TP-B<0 and TC-B-0, the message is marked in red

If TP-B>0 and TC-B < 0, the message is marked yellow

If TP-B >O and TC-B > 0, the message is marked as a green

If TP-B~O and TC-B < 0, the message is marked green

If TP-B<0 and TC-B-0, the message is marked in red

If TP-B>0 and TC-B < 0, the message is marked yellow

If TP-B >O and TC-B > 0, the message is marked as a green

NSF (Non-StoppingForwarding ) and non-stop circuits are transmitted NSR (Non-Stopping Routing) are two highly reliable solutions, and the following statement is correct

After NSR enablement, if the business batch backup has not yet ended, a master board failure occurs, the NSR cannot be completed

NSR backers require the ability to support NSR through specific message negotiation

After NSF is enabled, the router is switched back, and the routing table and forwarding table remain unchanged, so traffic is not lost during grf time

NSF routers do not need to negotiate the ability to support NSF through specific messages

Huawei H12-891 Practice Test 3 - Free Online Exam Prep & Questions

Question 1 / 40

Regarding the certification of the ISIS protocol, there is a correct statement

Connection authentication can realize the authentication of the hello messages of Leve-1 and Leve-2

After configuring the connection authentication, the IIH issued by the router must carry the authentication TLV

After configuring zone authentication, the router issues an IIH, SNP, LSPóstrap-to-tape authentication TLV

The two routers are configured for area authentication and interface authentication, and the passwords are the same, so the two can establish an isocopied relationship

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Huawei H12-891 Practice Test 3

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